I'm new to Python myself, but I think it's because the method readlist()
returns a list. Hence, f0 is typed 'list'. And lists can't be closed.
If you leave it to:
*f0= open("temp9","r+")
*and then assign another variable to the readlist, such as:
*lines = f0.readlines()*
Then in the for loop, change f1 to
*f1=lines[i].split()*
That may just stop it from complaining.
Untested, but logically it's sound.
Hope that works,
Ching-Yun "Xavier" Ho, Technical Artist
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On Fri, Jul 10, 2009 at 5:41 PM, jhinak sen <jhinak....@gmail.com> wrote:
> hi,
> i am a beginner in python language,
>
> i am trying with this programme :
> to find the addition and mean from a data set in a file and writing the
> mean and sum in some other file :
> ""
> *#! /usr/bin/env python
>
> import re
> import cPickle as p
> import math
> from numpy import *
>
> f0= open("temp9","r+").readlines()
> f2= open("out1","r+")
> add_1=[ ];
> for i in range(0, len(f0)):
> f1=f0[i].split()
> add= float(f1[1])+float(f1[2])
> mean= float(add)/2
> print (f1[1]).ljust(6) ,(f1[2]).ljust(6),repr(add).ljust(7),
> repr(mean).ljust(7)
> add_1.append(add)
> add_1.append(mean)
> f2.write("%s" % repr(add).ljust(7)),f2.write("%s" %
> repr(mean).ljust(7))
> print "printing from file"
> for i in range(0, len(add_1),2):
> print add_1[i]," ", add_1[i+1]
>
> f0.close()
> f2.close()*
>
>
> ""
>
> and this programme is givving me this error :
>
> "" *Traceback (most recent call last):
> File "./temporary1.py", line 24, in <module>
> f0.close()
> AttributeError: 'list' object has no attribute 'close'*
> ""
>
> please help to to find the error.
> or suggest some simpler or better way
>
> note:
> 1)file "temp9" is already exist
> 2)this programme is giving me all my outputs, but at the end of the out
> ..its giving me that error.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
>
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